# STC SA3252SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK400 consisting of Century IIB autopilot with optional radio coupler.
- Applied: October 19, 1977
- Status date: March 28, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6CE](https://openairdocs.org/tcds/A6CE)
- Certificate PDF: https://openairdocs.org/files/sha256/fb/9d/fb9dba61a9542a2e52fee52f97b42299f9732175993760844373fd053fac8d95
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/73668D26965CABF385256CC2000A95E4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3252SW-D

## ADs that name it (0)

None.

## Approved models (5)

- Cessna Aircraft Company 337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337G ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

department of transportation federal Nation administration Supplemental l^uje Certificate SA3252SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 mJA&J>!ufi&deA4JGtm^^Jfa . 23 Federal Aviation isl£a*&lei&&nA/.

A6CE Cessna 337E. 337F, 337G, 337H, T337H Installation of Mltchell Automatic Flight System Model AK400 consisting of a Centary IIB Autopilot with Optional Radio Coupler according to Bulletin No. 522.

Rev. 2 dated 3-6-78 and Master Drawing List No. 87A626, Rev. B dated 3-6-78 (28 mt System), or later FAA approved revision.

FAA/DAS Approved Supplemental Flight Manuals are required asfollows: P/N 68S608-1-S dated 3-30-78 is required for Models 337E and 337Fj P/N 68S609-1-S dated 3-30-78 is required for Model 336G, S/N 33701463 thru S/N 33701671 P/N 68S610-1 dated 3-30-78 is required for Model 337G, S/N 33701449 and S/N 33701672 and Dp; P/N 68S671 dated 3-30-78 is required for Model 337H; P/N 68S678 dated 3-30-78 is required for Model T337H. or later approved revision.

-PProved modifications 3-30-78; 3-28-84 Revision 2 -S a/f 4i//t#ttdce/ •' Don P. WatSOn (Signature) Manager, Aircraft Certification Division Southwest Region (Title)

**FAA FCMM 8110-2 (10-68)**

INSTRUCTIONS: The transferendowment below may be used to notify the appropriate FAA Regional Office of the transfer of thi* Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number.

to (Name of transferee).

(Address of transferee) _ from (Name of grantor) (Print or type).

(Address of grantor) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

4V ii c <-. p n '«

## Every issue (1)

- March 28, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fb/9d/fb9dba61a9542a2e52fee52f97b42299f9732175993760844373fd053fac8d95)

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